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j 2 Sheets-Sheet l pr 30', 1935. A. G. MADDOCK CALENDAR Filed'may 2s, 1954 aa I @wv f ATTORNEY.

Apml 36, M35. A, G. MADDOCK LQQ@ CALENDAR Filed May 28,` 1934 2 Sheets-Sheet 2 NOV DEC

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, 7% y QM ATTORNEY Fue 6 future. simple and novel arrangement for accommodat- Patented Apr. 30, 1935 UNiTED STTS Pimm 1,999,468 CALENDAR lliaddock, ietroit, Mich. Applicaties May 23,1934, sriai Nd. 727,846

8 Claims.

This invention relates to a calendar of the perpetual variety. It isthe aim of the invention to provide a calendar of simple construction, yet one which has adjustable features, so that these-me may be adjusted and varied in order to shew different calendar years and which may likewise he used for reference work in determining dates and the like of years long past or years in the The invention also aims to provide a ing leap-years, thus obviating the necessity of a double calendar arrangement in that the one calendar is suitable for all years. Further, the invention aims to provide a calendar structure which can be made in small sizes 'so that the same may be carried in the pocket of the user for ready reference In the accompanying drawings: Fig. l is a front View of a calendar constructed in accordance with the invention and vadjusted to the. year 1934.

Fig. 2 is a frontv View showing' the months of January and February, illustrating the adjustment `for the leap-year.

Fig. 3 is a detail view .of a leap-year slide.

Fig. 4 is a View showing the year slide and illustratingthe numbers and indicia carried thereby.

Fig. 5 is an elevational view of aback member which may carry directions and tables as shown.

Fig.. 6 is a-sectional' View takenl through' the calendar on line i-of Fig. 1.

. Fig.7 is a front elevational View of the' vcalendar, .illustrating a modified arrangement for adjusting the year slide.

Fig. 8 is'a detailed Sectional View taken substantially on line 8-8 of Fig. 7.

Fig. 9 is a front view of a calendar showing a modified' arrangement of the invention.

Fig. 10 isv the front View of a calendar showing a still further modified arrangement. The calendar, in its preferred form, h asa front member or sheet I provided with apertures or openings, therein as at 2 for ea'eh month of the year and each of which may be idn'tiiied by the name of the month printed or otherwise placed on the face ofthe member i as illustrated at 3. The member may have also van aperture ,4 through which the number of a Current `year be seen as will presently be described. The menu ber may have another aperture 5, whichV may be labeled `with suitable indicia, sueh asl-the notaf tion year number as illustrated at 5,1 the purpose of which Will presently appear. In theform shown, the member I may have one or more slots 'I fori/'accommodating manipulating devicesl on the leap-year slide. The face of the ,memb I may haveV indicia thereon adjacent each aperturefor the monthsMarch to Decernber inelusive for showing the days of the week. ForeXam'ple, this indicia maycomprise the first letterof each day of the week. This is used particularly in small sizes and such indicia is shown at..

The apertures for the months of vJanuary.and February are of larger dimensionsY than the apertures for the remaining months, and a leap-year slide I i is positioned back of the member I have ing apertures II for themonths of January and February, Suitable means, such as inger pieces I2 maybe attached tothe slideiil and arranged to projectl through ,the slots 'i so that the slide may be reciprocated with respectfoA the member I. These finger pieces are preferably headed and may consist of hollow rivets or eyelets, al;

though any other sort .ofnnger pieces maybe used. The leap-year'slide is equipped with inT dicia I3 forl indicating. the days of the week and the ,same is visible through V the relatively large openings in the member i., andthe slidemay also shown at I4, and on the opposite side of the apertures i,I, suitable indicia, as for example Leapyear s lideas shown at I5.v

VThe leap-year vslide may be mounted im'rnef diately to the rear ofthe member i as illustrated in Fig. 5. In ordinary years the slide is .to be positioned as shown in Fig l. In leap-years, .it is to be positioned as shown in Fig. 2.. This shift takes care of the odd day, as will presently be described.

rTo' the rearof the memberi and alsolto rear of the leap-year slide is a sheet or member 26 bearing for each month `aseries of vprorzeiy arranged numerals 2i and al series o fnumerals as at 22 for current years, and a serieS'Ofill-r merals 23 useiulfor reference work. A sheet or 2li. The member 28 Vmay project through tne r apertureas illustrated in Fig.V 6., The several membersmay appear in assembly as shown in Fig. 6l and may be .encased in a suitable closure, preferablyoftransparent material such as celluloid` or the like,'as illustrated at 30.

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The calendar is used as follows: The member 2G, or year slide, may be adjusted by the means of the operating piece 28 to bring the number of any one of the current years into registry with the aperture It. Thus the calendar may directly take care of a number of current years, as for example, seven years in the example shown. The slide is moved over one unit of movement for the year 1935, thus advancing the days; as for example Jan. l, 1934, was on Monday, and in 1935 this day is advanced to Tuesday, and all other days are advanced one day. For the year 1936, however, a leap-year, the year slide 2! is advanced two units, thus advancing all days of the months two days forward in their respective weeks. This properly adjusts the months from March to December, inclusive. Now, the leap-year slide is shifted from the Fig. l position to the Fig. 2 position, thus setting back the months of kglanuary and February one day, the rst of January falling on Wednesday, as illustrated in Fig. 2.

For reference work, the tables on the sheet 2Q may be resorted to, and it will be noted that each year listed is given a year number. For exar, ple, if one wishes to refer to the year 1945, the year number is d, andthe sheet 2E? is adjusted to bring the number 4 into registry with the aperture 5. The calendar now shows the year 1945. Leap-years are preferably shown in heavy faced type, and when the proper year number is brought into alignment with the aperture li, the leap-year slide is to be positioned, as illustrated in Fig. 2, to properly show the calendar for that year.

The form shown in Fig. 7 illustrates how the year slide 29 may be actuated by operating pieces 3l extending through slots 32 in the member l. The operating pieces may extend through the cover 39.

The modified forms shown in Figs. 9 and 10 illustrate how the calendar structure may be embodied in calendars having different arrangements of the months. The same reference characters are applied to these figures as have been used in the forni of the invention previously described. In Fig. 9 the months are arranged vertically in four columns with three months in each column, thus dividing the twelve months into seasonal groups of three. In Fig. 10 the months are arranged in four horizontal columns, thus dividing the twelve months into seasonal groups of three. The leap-year slide is Varied as to its form and dimension to take care of the relative position of the months of January and February, as in one case, January and February are vertically disposed and in the other case horizontally disposed.

The present disclosure, both as to description and drawings, is made for exemplary purposes to clearly bring out the essential eatures'of the invention; and it is to be appreciated that structural variations may be employed without departing from the spirit or" the invention. 1t is the intent to cover herein such structural variations as fall within the scope of the claims appended hereto.

It will be noted that the calendar always shows the days of the week in their proper or accustomed sequence. In other words, the weeks are shown as commencing with Sunday and ending with Saturday. This is true even for the'months of January and February during leap-years, because the indicia for the days of the week appear on the leap-year slide, and the week is started with Sunday regardless of whether or not it is leap-year, as illustrated in Figs. 1 and 2 of the drawings.

I claim:

1. A calendar comprising a front member having an opening for each month of the year, a second member adjustable relative to the front member and having a group of gures for each month, with part of each group visible through an opening, and a third member between the front member and the second member having apertures for the months of January and February and for concealing some of the gures in the groups for January and February on the second member and adjustable relative to the front member and second member for setting the calendar for leap-years.

2. A calendar comprising a front member having an opening for each month of the year with vthe openings for the months of January and February larger than those for the other months, a second member adjustable relative to the front member and having a group of gures for each month with part of each group visible through an opening, a third member between the second and the front member having apertures for January and February which are o1" substantially the same size as the apertures in the front member for the months March to December inclusive, the apertures in the third member being in substantial alignment with the January and February apertures in the front member for concealing some of the numbers of the corresponding groups, said third member being adjustable relative to the front member and second member for setting the calendar for leap-years.

3. A calendar comprising a front member having an opening for each month of the year, a second member adjustable relative to the iront member and having a group of gures for each month with each group arranged to have sucient numbers showing through its respective aperture to display a full month, a third member positioned between the front member and the second member andhaving apertures, one for the month of January and one for the month of February'and which are substantially aligned with the corresponding apertures in the front member and arranged to conceal from view some of the numbers for January and February, the front member having indicia thereon for the days of the weeks for the months March to December inclusive, the third member having indicia thereon for the days of the weeks for the months of January and February, said third memberr being adjustable relative to the front member and the second member for setting the calendar for leap-years.

4. A calendar comprising a front member having an aperture therethrough for each month of the year, a second member to the rear of the front member having a group of figures thereon for each month, said second member being adjustable relative to the front member to bring certain figures of each group into alignment with an aperture in the front member, the apertures in the front member for the months of January and February being larger than the apertures for the months March to December inclusive, a slide member between the front member and the sec- March to December, the slide member having indicia thereon for the days of the weeks for the months of January and February, said slide member concealing some of the numbers in the group for the months of January and February and being adjustable relative to the front member and second member for setting the calendar for leap-years.

5. A calendar comprising a front member with apertures therein for each month of the year, a second member adjustable relative to the front member and having a group of figures thereon for each month of the year, a slide member between the front member and second member having apertures in substantial alignment with the apertures for January and February in the front member and arranged to conceal some of the numbers in the groups for these months, said front member having a slot therein, an operating piece fastened to the slide member and projecting through the slot in the front member by means of which the slide member may be adjusted to set the calendar for leap-years.

6. A 4calendar comprising a front member having an aperture therein for each month of the year, a second member adjustable relative to the front member and having a group of gures for each month of the year, some of which are visible through the apertures in the front member, a slide member between the front member and the second member having an aperture for January and an aperture for February arranged to conceal some of the numbers in the January and February groups and adjustable relative to the front member and second member for setting the calendar for leap-years, a back member adapted to carry a table or the like, and a transparent covering encasing all of said members.

7. A calendar comprising a front member having an aperture therein for each month of the year, a second member adjustable relative to the front member and having a group of figures for each month of the year, some of which are visible through the apertures in the front member, a slide member between the front member and the second member having an aperture for J anuary and an aperture for February arranged to conceal some of the numbers in the January and February groups and adjustable relative to the front member and second member for setting the calendar for leap-years, a back member adapted to carry a table or the like, said back member having an aperture therein and an operating piece connected to the second member and accessible through said aperture in the back member. Y

8. A calendar comprising a front member having an aperture therein for each month of the year, a second member adjustable relative to the front member and having a group of gures for each month of the year, some of which are visible through the apertures in the front member, a slide member between the front member and the second member having an aperture for January and an aperture for February arranged to conceal some of the numbers in the January and February groups Vand adjustable relative to the front member and second member for setting the calendar for leap-years, a back member adapted to carry a' table or the like, said back member having an aperture therein, an operating piece connected to the Vsecond member and accessible through said aperture in the back member, and a transparent covering encasing all of said members and having an aperture therein through which said operating piece is accessible.

ALBERT G. MADDOCK. 

